JPS6126118Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an ear piece used to clamp a contact wire in a rigid overhead line system employed in subways and the like.

In overhead contact lines using T-shaped rigid overhead wires, it may be necessary to install additional contact wires in parallel with the existing contact wires due to an increase in power demand due to the addition of vehicles or to prevent wear of the contact wires. In such a case, the present invention aims to provide an ear piece that allows a new contact wire to be added by using the existing T-shaped rigid frame and ear piece as they are.

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a single contact wire T1 extends from the lower surface of a T-shaped rigid pedestal 1, and is held between a pair of ear pieces 2, 2 attached to both left and right sides of the rigid pedestal with bolts 3. The present invention relates to an improvement of an ear piece for adding one or more other contact wires in parallel to the existing contact wire T1 in this state.

As shown in FIGS. 2 and 3, the ear piece 4 according to the present invention is comprised of a T-shaped rigid body frame 1 and other ordinary ear pieces 2.
The ear piece 2 is incorporated between the ear piece 2 and the ear piece 2 to sandwich another additional contact wire T2. The upper inner side of the ear piece 4 has a connecting protrusion 4a that can come into contact with the ear receiver inclined part 1a of the rigid frame 1, and the opposite outer side has a connecting protrusion 4a of the same shape on the other ear piece 2. It is provided with a continuous protrusion 4b having an ear receiving inclined surface that can come into contact with the strip 2a, has a hole 4c for inserting the bolt 3 in the middle part, and has a hole 4c for inserting the bolt 3 in the lower part, and a contact wire T1 at the lower part of the rigid frame is connected to the bottom inside. Inner engagement protrusion 4 that can engage the engagement groove
d, has an outer engagement protrusion 4e on the outside of the lower part that can engage with the engagement groove of another additional contact wire T2, and furthermore has a horizontal engagement protrusion 4e on the upper part that can come into contact with the upper surface of the additional contact wire T2. It has a protrusion 4f. That is, the ear receiving inclined surface at the tip of the protruding ridge 4b of the ear piece 4 corresponds to the ear receiving inclined surface 1a of the existing rigid frame 1, and the horizontal protruding strip 4
The lower surface f corresponds to the lower end surface of the rigid body frame 1.

Therefore, when adding another contact wire T2 as shown in FIG. 2 to the rigid overhead wire in the state shown in FIG. Ear piece 4 according to the present invention in place of
, extend a new contact wire T2 to the outside of the contact wire T2, and then extend the ear piece 2 that was removed earlier to the outside of the new contact wire T2.
A bolt 5 is inserted from the side and tightened with nuts 6. The bolt 5 is different from the existing one and has a collar 5a in the middle as shown in FIG.

In addition, as shown in FIG. 4, the ear piece 4 can also be attached to the right side of the rigid frame 1, and the contact wires T3 can be arranged in parallel, so that a total of three contact wires can be extended.
Furthermore, although not shown, an ear piece 4 may be provided as needed.
It is possible to install more contact wires in parallel.

As described above, the ear piece 4 according to the present invention has the joining protrusion 4a and the continuous protrusion 4b on both sides of the upper part,
Since it has a bolt insertion hole 4c in the middle, engaging protrusions 4d and 4e on both sides of the lower end, and horizontal protrusions 4f on the inside of the upper part, it can be used with the existing T-shaped rigid frame 1. , and the ear pieces 2 can be used as they are to add other contact wires T2 and T3 at low cost, thereby increasing the current capacity and reducing wear on the contact wires.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention.
The figure is a side view of the existing overhead wire, Figure 2 is a side view showing the contact wire being added, Figure 3 is the front view of the same, Figure 4 is a side view showing the contact wire being added, and Figure 5 is a cross section of the ear piece. FIG. 6 is a front view of the same, and FIG. 7 is a front view of the mounting bolt. DESCRIPTION OF SYMBOLS 1... T-type rigid body frame, 2... Ear piece, 3... Bolt, 4... Ear piece, 4a... Connection protrusion, 4b...
...Connecting protrusion, 4c...hole, 4d...inner engagement protrusion, 4e...outer engagement protrusion, 4f...horizontal protrusion,
5...Bolt, 5a...Tsuba, 6...Natsuto, T
1, T2, T3...Trolley wire.

Claims (1)

[Scope of utility model registration request] A long ear piece that cooperates with another ear piece to sandwich a contact wire extending to the lower end of the T-shaped rigid body frame, and a joint that can come into contact with the rigid body frame on the inside of the upper part. A connecting protrusion is provided on the outside opposite to the protrusion, and a connecting protrusion that can come into contact with the same-shaped joint protrusion on the inside of the other ear piece is provided, and a connecting protrusion on the inner side of the lower part is provided in the contact wire engagement groove on the lower part of the rigid body frame. An inner engaging protrusion that can be engaged is provided on the outer side of the lower part, an outer engaging protrusion that is opposite to this on the lower outer side and is capable of engaging with another outer trolley wire engaging groove, and the middle part is provided with an outer engaging protrusion that can be engaged with the other outer trolley wire engaging groove. An ear piece for adding a contact wire to a rigid overhead wire, characterized in that it is provided with a mounting bolt through hole and is capable of holding another contact wire to be added between it and another ear piece attached to the outside.